Technical data

Basic Verilog simulation

136

ModelSim EE Lessons ModelSim EE Tutorial

Next change the run length to 500 on the

Run Length

selector and select the

Run

button again.

Now the simulation has run for a total of 600ns (the default 100ns plus the 500 you

just asked for). A status bar reflects this information at the bottom of the Main

window.

The last command you executed (

run

500

) caused the simulation to advance for 500ns.

You can also advance simulation to a specific time. Type:

run @ 3000

This advances the simulation to time 3000ns. Note that the simulation actually ran

for 2400ns (3000 - 600).

Now select the

Run All

button from the Main toolbar. This causes the simulator to run

forever.

(PROMPT: run -all) (Main MENU: Run > Run -All)

Select the

Break

button to stop the run.

(control + c with the Main window active)